PDB Statistics: PDB Data Distribution by Molecular Weight (Structure)

All macromolecules, small molecules, and ions are included, except for water molecules. Molecular weight is calculated for all atoms, including those not observed in the experiment. Molecular weight of all non-water atoms in the asymmetric unit.

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Molecular Weight (Daltons)Number of Entries
< 20K29698
20K - 40K41740
40K - 60K30634
60K - 80K18680
80K - 100K12977
100K - 120K9369
120K - 140K6167
140K - 160K4607
160K - 180K3841
180K - 200K2785
200K - 220K2185
220K - 240K1811
240K - 260K1316
260K - 280K1073
280K - 300K852
300K - 320K708
320K - 340K669
340K - 360K610
360K - 380K530
>= 380K7403